APA Citation
Schore, A. (2001). The Effects of Early Relational Trauma on Right Brain Development, Affect Regulation, and Infant Mental Health. *Infant Mental Health Journal*, 22(1-2), 201-269. https://doi.org/10.1002/1097-0355(200101/04)22:1<201::AID-IMHJ8>3.0.CO;2-9
Summary
This landmark paper presents Allan Schore's model of how early relational trauma shapes the infant's developing brain. Schore demonstrates that during the first three years of life, the right hemisphere of the brain—which governs emotional processing, stress regulation, and the sense of self—develops with marked priority over the left hemisphere. This development occurs through attuned interactions with caregivers. When a caregiver provides consistent, responsive care, the infant's right brain builds the neural architecture for healthy affect regulation. But when the caregiver is the source of trauma—through abuse, neglect, or chronic misattunement—the infant's developing brain is forced to adapt to an environment of relational stress. These adaptations become imprinted in neural circuits during critical periods when the brain is maximally plastic, creating lasting vulnerabilities in affect regulation, stress response, and relational capacity that persist into adulthood.
Why This Matters for Survivors
For survivors of narcissistic abuse in childhood, this research explains why the damage feels so deep and why it began before you could even form memories of it. Your right brain was being constructed during those first three years, and the chronic misattunement or abuse from your caregiver became part of that construction. This isn't about bad memories you can simply reframe—it's about neural architecture that was built under traumatic conditions. Understanding this can help you stop blaming yourself for struggles that have neurobiological origins in experiences you had no power to prevent or escape.
What This Research Found
Allan Schore’s influential paper presents a comprehensive model of how early relational trauma shapes the infant’s developing brain. Published in the Infant Mental Health Journal and cited in foundational trauma and attachment literature worldwide, this work synthesises developmental neuroscience, attachment theory, and infant psychiatry to explain why the first three years of life are so critical—and what happens when they go wrong.
The right hemisphere develops first and through relationship. Schore demonstrates that during the first three years of life, the right hemisphere of the brain develops with marked priority over the left. The right hemisphere specialises in reading emotional faces, processing prosody (the emotional tone in speech), detecting threat, regulating arousal, and governing the implicit sense of self. These functions are essential for early survival—the infant must read the caregiver’s emotional state and regulate their own stress long before language develops. Crucially, this right hemisphere development occurs through attuned interactions with caregivers. The neural architecture of affect regulation is literally constructed in the context of the caregiver-infant relationship.
Early relational trauma becomes imprinted in developing neural systems. When the primary caregiver is the source of trauma rather than safety—through abuse, neglect, chronic misattunement, or the unpredictability characteristic of narcissistic parenting—the infant’s right brain must adapt to this environment. Because this occurs during critical periods of maximum neuroplasticity, these adaptations become imprinted in neural circuits. The stress response system calibrates for an environment of chronic threat. The attachment system organises around an unreliable caregiver. The affect regulation circuits develop without the attuned input they need to function properly.
The damage occurs below the level of language and conscious memory. Because right hemisphere development precedes left hemisphere language acquisition, early relational trauma is encoded in implicit, procedural memory rather than explicit, narrative memory. The patterns laid down in these first years become the operating system upon which all later development builds. Survivors often cannot articulate what happened—the trauma predates their capacity for autobiographical memory—yet the neural adaptations persist, shaping how they regulate emotion, respond to stress, and relate to others throughout their lives.
The mechanism is psychobiological dysregulation. Schore introduces the concept of the caregiver as a “psychobiological regulator” of the infant’s immature systems. When the caregiver is attuned, their regulated nervous system helps organise the infant’s dysregulated states through what Schore calls “psychobiological attunement.” But when the caregiver is themselves dysregulated—as narcissistic parents typically are—they cannot provide this regulatory function. Worse, they may actively dysregulate the infant through their own emotional volatility, intrusiveness, or withdrawal. The infant’s developing brain thus learns to expect dysregulation rather than co-regulation.
Why This Matters for Survivors
If you were raised by a narcissistic parent, Schore’s research explains why the effects feel so foundational—why it seems like something is wrong at the core rather than on the surface.
The damage began before you could protect yourself—or even remember. Your right brain was being constructed during those first three years, and your narcissistic parent’s chronic misattunement, unpredictability, or abuse became part of that construction. You didn’t choose these adaptations; they happened at a neural level before you had the cognitive capacity to understand what was occurring. The hypervigilance, the difficulty regulating emotions, the sense that something fundamental is off—these aren’t character flaws or signs of weakness. They’re the neural signature of a brain that was built under conditions of relational trauma.
Your struggles with emotional regulation make neurobiological sense. Schore’s research shows that the capacity to regulate emotions is built through thousands of repetitions of attuned caregiver response during critical developmental windows. When a caregiver reliably responds to infant distress with soothing, the infant’s developing prefrontal cortex builds connections that will eventually enable self-regulation. When this doesn’t happen—when the caregiver is unavailable, dysregulating, or the source of the distress—those regulatory circuits don’t develop properly. You’re not failing at something you should be able to do; you’re working with neural infrastructure that was never properly built.
This explains why insight alone doesn’t heal. You may understand intellectually what happened to you. You may have spent years in therapy developing sophisticated frameworks for your family dynamics. Yet the patterns persist. Schore’s research explains why: the damage occurred in right-hemisphere implicit memory systems, before language developed, before you could form conscious memories. Insight—which relies on left-hemisphere verbal processing—cannot directly access what was damaged. This is why healing from early relational trauma typically requires more than talk therapy alone; it requires corrective relational experiences that engage the right hemisphere.
Your hypervigilance was adaptive. The child of a narcissistic parent had to become an expert reader of the parent’s emotional states to survive. Your brain devoted developmental resources to threat detection and caregiver monitoring because that’s what your environment demanded. The hypervigilance that now feels maladaptive in safe relationships was once essential for navigating an unpredictable caregiver. Understanding this can help you stop pathologising yourself and start working with your nervous system rather than against it.
Clinical Implications
For psychiatrists, psychologists, and trauma-informed healthcare providers, Schore’s research has direct implications for assessment and treatment of early relational trauma.
Assess developmental timing with clinical precision. When did the patient’s adverse experiences begin? Schore’s model identifies the first three years as the critical period for right hemisphere development and affect regulation capacity. Patients whose trauma occurred during this window—before they could form explicit memories—may present with pervasive regulatory difficulties that resist conventional insight-oriented treatment. Understanding that the injury occurred during construction of the brain’s operating system, rather than as an insult to an already-developed system, informs realistic expectations and treatment planning.
Prioritise the therapeutic relationship as the mechanism of change. Schore’s framework implies that therapeutic change in early relational trauma occurs through right-brain to right-brain communication—prosody, facial expression, timing, and emotional attunement—more than through verbal interpretation. The therapist must become what Schore calls a “psychobiological regulator,” providing the attuned responsiveness that was missing in early life. This isn’t just about creating rapport; the relationship itself, over time, can help build the regulatory circuitry that was never properly constructed.
Consider treatment intensity that matches developmental depth. Standard outpatient therapy (weekly 50-minute sessions) may be insufficient for patients whose affect regulation circuitry was shaped during critical periods. Schore’s work suggests that interventions approximating the conditions of early development—frequent, consistent, emotionally attuned—may be necessary for meaningful neural change. This has implications for treatment planning: more frequent sessions, longer sessions, adjunctive body-based approaches, and realistic expectations about treatment duration measured in years rather than months.
Integrate body-based and right-hemisphere-engaging interventions. Since the damage occurred in implicit, right-hemisphere systems, interventions that engage these systems directly—EMDR, Somatic Experiencing, sensorimotor psychotherapy, attachment-focused treatments—may access the injury more directly than purely verbal approaches. Schore’s work supports combining relational attunement with modalities that engage procedural memory and the body’s role in affect regulation.
Broader Implications
Schore’s research on early relational trauma extends beyond individual therapy to illuminate patterns at family, institutional, and societal levels.
The Mechanism of Intergenerational Transmission
If affect regulation capacity is built through the caregiver’s regulated presence, what happens when the caregiver themselves lacks regulatory capacity? The narcissistic parent who cannot regulate their own emotions cannot provide the regulatory scaffolding their infant needs. The child grows up with compromised affect regulation, becomes a parent, and transmits the same deficit to the next generation. This is the mechanism of intergenerational trauma—not mystical inheritance but neurobiological reality operating through the caregiver-infant relationship. Breaking these cycles requires interventions that address parental regulatory capacity, not just parenting behaviours.
Implications for Child Welfare and Foster Care
Schore’s work has direct implications for child welfare policy. Foster care systems that move children between placements during critical periods disrupt exactly the relationships needed for regulatory development. Institutional care settings that provide physical needs but not attuned relational engagement fail to provide what developing brains require. Policies supporting consistent caregiving relationships, even when birth parents cannot provide them, are not merely humane preferences—they are neurobiologically necessary for healthy development.
Understanding the Narcissistic Parent’s Impact
The narcissistic parent creates precisely the conditions Schore identifies as traumatic for developing brains: chronic unpredictability, where emotional availability depends on the parent’s needs rather than the child’s; misattunement, where the infant’s emotional states are ignored, misread, or met with the parent’s unrelated states; and role reversal, where the infant must regulate the parent rather than the other way around. The infant cannot predict when connection will be available, cannot develop reliable models of the social world, and must devote developmental resources to monitoring the parent rather than exploring and learning. The resulting neural adaptations are precisely calibrated to this pathological caregiving environment.
Early Intervention as Prevention
Schore’s framework suggests that intervention during critical periods may prevent neural adaptations from consolidating. If we can identify at-risk dyads—narcissistic parents, parents with unresolved trauma, parents struggling with addiction or mental illness—and provide intensive early intervention that supports parental regulatory capacity and infant attunement, we may prevent the intergenerational transmission of trauma. The public health return on investment for such early intervention would likely be substantial, measured in reduced later mental health costs, criminal justice involvement, and lost productivity.
The Limits of Adult Treatment
Schore’s model also illuminates why treating adult narcissism is so difficult. The narcissistic adaptations were encoded during critical periods of maximum plasticity, becoming part of the brain’s fundamental architecture. Adult treatment must work against consolidated neural patterns that were built when the brain was maximally receptive to experience. This doesn’t mean change is impossible—adult neuroplasticity exists—but it explains why treatment is slow, requires sustained effort, and often produces limited results. Prevention through early intervention may ultimately be more effective than attempts to reverse decades-old neural adaptations.
Legal and Policy Considerations
Family courts making custody decisions should understand that transitions between caregivers during the first three years may have neurobiological costs beyond obvious psychological stress. Judges awarding custody to narcissistic parents because they present well in court may be enabling ongoing developmental trauma. Criminal justice systems might consider how early affect regulation failures contribute to later difficulties with impulse control—not as excuse, but as context for rehabilitation approaches that address regulatory capacity.
How This Research Is Used in the Book
Schore’s 2001 paper is cited in Chapter 6: The False Self and Chapter 10: Building the Maze to explain the neurobiological mechanisms by which early relational trauma shapes the developing brain.
In Chapter 6, Schore’s work establishes why human infants are so vulnerable to relational trauma:
“During the first three years of life, Elena’s right hemisphere develops with marked priority over the left. The reason is simple: our right hemisphere specialises in those functions most essential for early survival. This includes reading emotional faces and processing prosody (patterns of stress and intonation in spoken language.) It begins detecting threat and regulating arousal. The left hemisphere’s specialisations while important—such as language, logic, and sequential processing—can actually wait. The right hemisphere cannot.”
The chapter then describes what this means for the infant of a narcissistic parent:
“The infant of the narcissistic parent experiences chronic unpredictability.”
In Chapter 10, Schore’s research explains how the reward system develops through early relational experience and how this development goes wrong when caregiving is inconsistent:
“During the first months of life, evidence suggests the reward system begins learning the contingencies of social interaction. When caregiving is consistent, the system likely learns: ‘Social cues reliably predict reward.’ Dopamine neurons develop appropriate prediction models; opioid release becomes associated with ordinary caregiving experiences.”
The chapter continues:
“In healthy development, the infant has learned that their bids for connection generally produce response. The reward system is calibrated for a social world that is, on average, responsive. Dopamine and opioid systems are sensitised to ordinary social cues.”
Schore’s framework is also applied to understand the development of empathy deficits:
“The empathy network, like the stress and reward systems, can develop as skin or as scales. In healthy development, resonance is automatic and flexible (skin). In disrupted development, resonance is blocked or selective—the AI [anterior insula] activating only for those who matter to the self (scales).”
Throughout the book, Schore’s work demonstrates that narcissistic abuse during childhood doesn’t just cause psychological distress—it shapes the neural architecture upon which personality and relational capacity are built.
Limitations and Considerations
Responsible engagement with Schore’s work requires acknowledging several important limitations.
Complexity of critical period boundaries. While Schore identifies the first three years as particularly critical for right hemisphere development, the precise boundaries and the degree to which later experience can modify early patterns remain subjects of ongoing research. Individual variation in critical period timing exists, and some plasticity persists into adulthood.
Translation to clinical protocols. Schore’s synthesis is masterful at the theoretical level, but translating “provide attuned relational experience during critical periods” into specific clinical protocols remains challenging. For adult treatment, the question of how to approximate critical period conditions therapeutically is not fully resolved.
The challenge of measuring change. How do we know when therapeutic intervention has successfully rebuilt affect regulation capacity? Subjective report and behavioural observation are imperfect measures. Neuroimaging could theoretically demonstrate neural changes but is not practical for routine clinical use.
Cultural considerations. Schore’s work draws primarily on Western attachment research. What constitutes “attuned caregiving” varies across cultures, and the specific expressions of healthy affect regulation development may differ. Clinicians should be cautious about applying a universal template across diverse populations.
Risk of determinism. There is a risk that Schore’s framework could be interpreted as meaning early trauma creates permanent, irreversible damage. While the research shows that early adaptations are deeply embedded, adult neuroplasticity means change remains possible—albeit harder than if the foundation had been properly built initially.
Historical Context
Published in 2001, this paper represents a mature statement of Schore’s “regulation theory”—the framework showing how early relationships shape brain development. It built on his groundbreaking 1994 book Affect Regulation and the Origin of the Self and integrated subsequent developments in neuroimaging, attachment research, and trauma studies.
The paper appeared at a pivotal moment in developmental neuroscience. Brain imaging technology had matured enough to reveal structural and functional differences associated with early experience. Attachment research had generated robust longitudinal findings linking early caregiving quality to later outcomes. And the field of infant mental health was ready for a neurobiological framework that could explain the mechanisms underlying clinical observations.
Schore’s integration was distinctive in bridging neuroscience, psychoanalysis, and attachment theory—fields that had often operated in isolation. His emphasis on right hemisphere function, implicit memory, and the body’s role in affect regulation anticipated later developments in body-based trauma treatment and the polyvagal theory.
The paper has been widely cited across developmental psychology, trauma studies, attachment research, and clinical practice. Its framework—that the caregiver literally builds the infant’s brain through attuned interaction—has become foundational for understanding early development and the origins of later psychopathology.
Further Reading
- Schore, A.N. (1994). Affect Regulation and the Origin of the Self: The Neurobiology of Emotional Development. Lawrence Erlbaum Associates.
- Schore, A.N. (2003). Affect Regulation and the Repair of the Self. W.W. Norton & Company.
- Schore, A.N. (2012). The Science of the Art of Psychotherapy. W.W. Norton & Company.
- Schore, A.N. (2019). Right Brain Psychotherapy. W.W. Norton & Company.
- Siegel, D.J. (2012). The Developing Mind: How Relationships and the Brain Interact to Shape Who We Are (2nd ed.). Guilford Press.
- Perry, B.D. & Szalavitz, M. (2006). The Boy Who Was Raised as a Dog. Basic Books.
- Porges, S.W. (2011). The Polyvagal Theory: Neurophysiological Foundations of Emotions, Attachment, Communication, and Self-regulation. W.W. Norton & Company.
Abstract
This article presents a model of the early development of the right brain, the hemisphere that is dominant for the unconscious processing of socioemotional information, the regulation of bodily states, the corporeal sense of self, and the capacity to cope with stress. It describes the mechanisms by which early relational trauma, the primary caregiver's psychobiological dysregulation of the infant's developing brain and body, becomes imprinted into the right-hemisphere systems that process emotional information, regulate stress, and establish the foundations of later personality and mental health. The model integrates developmental neuroscience, attachment theory, trauma studies, and infant psychiatry to explain how relational stress during critical periods of early brain development produces long-term effects on the infant's maturing psychobiological systems.
About the Author
Allan N. Schore is on the clinical faculty of the Department of Psychiatry and Biobehavioral Sciences at the UCLA David Geffen School of Medicine. He is the author of four seminal volumes on affect regulation and the developing brain, and his work has been cited over 50,000 times across neuroscience, psychology, psychiatry, and psychoanalysis.
Schore completed his undergraduate work at Brooklyn College and received his PhD from the State University of New York at Buffalo. He trained as a psychoanalyst at the Institute of Contemporary Psychoanalysis in Los Angeles and completed postdoctoral fellowships in developmental neurobiology. This unusual combination of psychoanalytic training and neuroscience research positioned him uniquely to bridge these fields.
His 1994 book Affect Regulation and the Origin of the Self established the framework that this 2001 paper extends to early relational trauma. Often called 'the American Bowlby' for his contributions to attachment neuroscience, Schore has fundamentally shaped how clinicians and researchers understand the biological mechanisms underlying early development, trauma, and the therapeutic relationship.
Historical Context
Published in 2001 in the Infant Mental Health Journal, this paper synthesised two decades of research on right hemisphere development, trauma, and infant mental health. It appeared at a pivotal moment when neuroimaging technology had matured enough to reveal brain changes associated with early experience, attachment research had established robust findings about long-term consequences of caregiving quality, and the field was ready to integrate developmental neuroscience with clinical understanding of early trauma. The paper has become foundational for infant mental health professionals, trauma therapists, and researchers studying the developmental origins of psychopathology.
Frequently Asked Questions
No—but it does mean that early relational trauma created neural adaptations that are deeply embedded and require more than insight to change. Schore's research shows that the brain develops through relationship, which means healing can also occur through relationship. The same neuroplasticity that allowed harmful patterns to be encoded allows new patterns to develop. However, because the damage occurred during critical periods when the brain was maximally plastic, adult healing typically requires more intensive, longer-term, and relationship-based intervention. You're not permanently broken, but you are working against neural architecture that was built under traumatic conditions—which explains why healing is harder than simply understanding what happened.
Because the trauma occurred before your hippocampus was mature enough to form explicit, narrative memories. Schore's research explains that right hemisphere development—which governs emotion, stress response, and the implicit sense of self—occurs in the first three years of life, before the left hemisphere's language and autobiographical memory systems are fully developed. The patterns laid down during this period are encoded in procedural, implicit memory—in how your body responds to stress, how you regulate arousal, how you relate to others. You may have no conscious recollection of what happened, yet the neural adaptations remain. This is why survivors often feel there's something fundamentally wrong without being able to point to a specific memory as the cause.
Understanding developmental origins doesn't eliminate adult responsibility. Schore's research explains how narcissistic traits may develop through disrupted affect regulation in early childhood—the infant who was not attuned to, whose emotional states were chronically mismatched or ignored, develops compensatory patterns that can evolve into narcissistic defences. But adults make choices about their behaviour. Many people with difficult childhoods don't become abusers. The research helps us understand why change is so difficult for narcissists—their patterns are encoded in neural architecture—while still holding them accountable for the harm they cause. It also suggests that prevention through early intervention may be more effective than expecting adult narcissists to fundamentally transform.
Schore's framework has four key clinical implications. First, the therapeutic relationship is the primary intervention—not just a context for techniques, but the actual mechanism of change through which right-brain to right-brain attunement helps build regulatory capacity. Second, treatment should prioritise implicit, procedural, and nonverbal elements—prosody, timing, facial expression, and felt safety matter more than insight. Third, assess developmental timing: trauma during Schore's identified critical periods (especially the first three years) may require more intensive, longer-term treatment. Fourth, consider body-based and right-hemisphere-engaging interventions alongside traditional talk therapy, since the damage occurred in implicit systems that verbal processing alone may not reach.
Schore's research explains the mechanism of intergenerational transmission: if you struggle with affect regulation because of your own early experiences, you may find it difficult to provide the consistent attunement your children need—not because you don't love them, but because you can't give what you never received. However, awareness creates opportunity. Understanding what children need neurobiologically (consistent attunement, repair of ruptures, regulated caregiver presence), working on your own regulatory capacity through therapy, getting support when overwhelmed, and repairing disconnections when they happen can all interrupt the cycle. You don't have to be perfect—Schore notes that even healthy dyads are attuned only 30% of the time. What matters is reliable repair. Getting help with your own healing is one of the most important things you can do for your children.
The right hemisphere specialises in functions most essential for early survival: reading emotional faces, processing prosody (the emotional tone in voices), detecting threat, and regulating arousal. These capacities are needed immediately—the infant must be able to read the caregiver's emotional state and regulate their own stress response long before language develops. The left hemisphere's specialisations (language, logical reasoning, sequential processing) can wait. This is why Schore emphasises that right hemisphere development has 'marked priority' during the first three years. It's also why early relational trauma has such profound effects: it disrupts the development of systems that govern our most fundamental capacities for emotional life and relationship.
Schore's model explains exactly how the narcissistic parent damages infant development. The infant of the narcissistic parent experiences chronic unpredictability—the caregiver's emotional availability depends on the parent's narcissistic needs rather than the infant's developmental needs. The parent may be attuned when the infant provides narcissistic supply (reflecting the parent's grandiosity) but unavailable, hostile, or intrusive when the infant has needs that don't serve the parent. This creates a relational environment where the infant cannot predict when caregiving will be available, cannot develop reliable models of the social world, and must constantly monitor the parent's state to find windows of connection. The infant's developing right brain adapts to this unpredictable environment, building neural architecture suited for vigilance and survival rather than secure attachment and healthy affect regulation.
Major open questions include: What are the optimal therapeutic protocols for rebuilding affect regulation capacity in adults whose critical period development was disrupted? How do we measure therapeutic progress at the neural level? What is the minimum effective 'dose' of early intervention that can protect at-risk infants during critical periods? How do we translate laboratory findings about neuroplasticity into clinical protocols that reliably reopen developmental windows? Can pharmacological interventions enhance the relational learning that builds regulatory capacity? And critically: how do we identify which infants are at risk before the critical periods close, enabling prevention rather than later intervention? Schore's framework provides the theoretical foundation, but translating it into optimised early intervention and adult treatment protocols remains an active research frontier.